I have a 2001 b18c5 motor. i converted to obd1 and had my computer chipped with crome. was told that i should have no problem with 9500rpm's. well thats not true i believe it was the second day having the chip i bent 3 valves. so over the winter i ended up replacing those 3 valves got a 5 angle valve job (all the machine shop offered) had the head port matched the guy also did a little on the tb and intake mani also. I also put in a fidanza 7.5 flywheel and a obx diff. i was curious if anything i did should make me loose a good bi of power from it being basically stock? we have a spot where we test our cars. its just about a quarter mile long. i was able to hit 101mph with my stock itr computer and now i can only hit 92. very confused and kinda irritated on top of that. any information or suggestions would be appreciated.